Active lifecycle — no end-of-life risk on this BOM line
The 71V416L15PHG: For a procurement desk managing a 4 Mbit async SRAM line, this means the part stays in the manufacturer's active price book and allocation queue; there is no forced redesign window. ROHS3 compliant — no exemption expiry to track for EU/RoHS markets. The compliance documentation covers the full material declaration per JEDEC JESD97.
15 ns access time — the bus-speed ceiling for the memory controller
15 ns access time and 15 ns write cycle time set the minimum cycle period for the memory controller. At 15 ns the part supports a 66 MHz bus clock with zero wait states — the controller must meet the address-to-data valid window, not the other way around. For a 50 MHz bus there is margin; for a 75 MHz bus the controller needs a wait state insertion. The 256K x 16 organization maps directly onto a 16-bit data bus without byte-lane multiplexing — the chip-enable and output-enable signals gate the full word. This saves two GPIOs compared to a 32-bit-wide part in the same density class.
3V to 3.6V supply means a single 3.3V rail powers the core and I/O — no separate Vddq. 44-TSOP II package — the 0.400-inch body width, 10.16 mm, with 0.8 mm pin pitch. Standard footprint for 4 Mbit async SRAMs; rework-friendly with a hot-air nozzle sized for the 44-lead gull-wing profile.